Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
355/25r21 vs 335/25r22 Tire Comparison Side By Side
  355/25-21 335/25-22 Difference
Diameter inches (mm) 27.99 (710.9) 28.59 (726.3) 0.61 (15.4) 2.2%
Width inches (mm) 13.98 (355) 13.19 (335) -0.79 (-20) -5.6%
Circum. inches (mm) 87.93 (2233.36) 89.83 (2281.74) 1.9 (48.38) 2.2%
Sidewall Height inches (mm) 3.49 (88.75) 3.3 (83.75) -0.2 (-5) -5.6%
Revolutions per mile (km) 720.59 (447.76) 705.31 (438.26) -15.28 (-9.49) -2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.43 mph (32.88 km/h)
25 mph (40.23 km/h)25.54 mph (41.11 km/h)
30 mph (48.28 km/h)30.65 mph (49.33 km/h)
35 mph (56.33 km/h)35.76 mph (57.55 km/h)
40 mph (64.37 km/h)40.87 mph (65.77 km/h)
45 mph (72.42 km/h)45.97 mph (73.99 km/h)
50 mph (80.47 km/h)51.08 mph (82.21 km/h)
55 mph (88.51 km/h)56.19 mph (90.43 km/h)
60 mph (96.56 km/h)61.3 mph (98.65 km/h)
65 mph (104.61 km/h)66.41 mph (106.87 km/h)
70 mph (112.65 km/h)71.52 mph (115.09 km/h)
75 mph (120.7 km/h)76.62 mph (123.32 km/h)
80 mph (128.75 km/h)81.73 mph (131.54 km/h)
85 mph (136.79 km/h)86.84 mph (139.76 km/h)
90 mph (144.84 km/h)91.95 mph (147.98 km/h)
95 mph (152.89 km/h)97.06 mph (156.2 km/h)
100 mph (160.93 km/h)102.17 mph (164.42 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
17952085224623452452252826122711284929863139326134833727391840404109436147135476
Better Fuel Economy Factory Ratios Increased Power

Most Popular 355/25-R21 Comparisons

To Top